The mysql transaction rollback is invalid.
A strange thing happened to the Payment Service recently. When a transaction fails, you call rollback and find that only the last SQL statement is rolled back.
After a long time of development check, it was found that the network jitters caused the begin of the first link cr
the database on my own machine I didn't do any DML operations, why would there be an active transaction? This transaction also uses 2 undo blocks.
SQL> SELECT ktuxesiz FROM x$ktuxe WHERE ktuxesta != 'INACTIVE'; KTUXESIZ ---------- 2
Continue to check the situation on your own machine, there is indeed an active transaction
transaction is a sqlloader process (the SQL statement that Sid 71 is executing in the database just now is such an insert Statement ). This confirms my initial guess. For some reason, the developer killed the sqlloader process being executed, and there was a row of activity in the rollback segment. This happened after
system query system data. The front-line system and the backend system are designed to meet the financial system's 24-hour operational potential, and the Big Data processing systemBusiness function 1. Consumer transactions: consumption, consumption, consumption cancellation, consumption cancellation rushed positive, return. 2. Pre-Authorization class transactions: pre-authorization, pre-authorization stamping, pre-authorization revocation, pre-authorization revocation punch, pre-authorization
Tags: style blog http color using strong file data Many times when we use Hibernate's session, we keep the session unique in a running environment. For example, in the same line range with the same session, in the same method with the same session, so that we can use the session to cache good data. But, what I want to say is not the cache, and listen to my one by one Tao.Recently tried spring3.0.2+struts2.1
.impl.C3P0PooledConnectionPool.checkoutPooledConnection (c3p0pooledconnectionpool.java:525 )... MoreStart Java today's Web project is slow to start, the final report above the error, before good how suddenly did not do it.Later after the troubleshooting is MySQL did not start, although MySQL has been installed as Windows system Services, set to start automatically, but should be in the boot process
operations are performed at the service layer, and many DAO operations have failed all rollbacks, and the success is all committed.The transaction is divided into business transaction and system transaction, business transaction
transactions. Transaction nesting is evil.
If you don't believe what I'm saying, you'll believe it by following the example. After you create the database and tables, each record will cause the log to increase by 8K.
CREATE DATABASE nestedxactsarenotreal;
Go
Use Nestedxactsarenotreal;
Go
ALTER DATABASE nestedxactsarenotreal SET RECOVERY simple;
Go
CREATE
When getCurrentSession is used in Hibernate4 to report cocould not obtain transaction-synchronized Session for current thread, synchronizedsession
Assume a spring4 + hibernate4 demo, inject sessionFactory directly into the dao layer, and then use the getCurrentSession method to get the session. Then the problem arises and an error is reported:
Could not obtain
The MySQL transaction isolation level is the "phantom read" phenomenon under "Repeatable-read" Statements about transaction control in the MySQL command line see this article:http://my.oschina.net/xinxingegeya/blog/296459 This film reference article: http://blog.csdn.net/jiao_fuyou/article/details/16368827 Http://www.cnblogs.com/hancf/archive/2012/08/28/2660422.
I think what I have already said is very clear. It is difficult to look at the original text. The Chinese are the replies taught by computer teachers, and I cannot reply them one by one. Of course, I know that myisam tables do not support transactions. I just want to use this to implement table logs in transactions! Please read the question carefully !!! Mysql5..
level for e-commerce" will mention that it is a competitor that is beneficial to us, because each project team is overcoming its product weaknesses. What MaxSQL does is to eliminate the gap between the two competitors. MySQL has fast read operations, so it
What is a data warehouse, and what is the difference between a databaseDataWarehouseis a subject-oriented (Subject oriented), integrated (integrate), A relatively stable (non-volatile), data collection that reflects historical changes (timeVariant) to support management decisions. (1) topic-oriented: Index data in the
Label: Very often when we use Hibernate's session, we keep the session unique in an execution environment.For example, in the same line range with the same session. Use the same session within the same method so that we can use the cached data in the session. But. What I want to say is not the cache, and listen to my one by one-way.Recent trial spring3.0.2+struts2.18+hibernate3.3.2 learning to build a Web p
Look at a SQL first, the last SQL output what do you think it is?SET autocommit = 1; Begin;insert into T1 VALUES (1); CREATE TABLE T2 (PK int primary key); INSERT into T2 VALUES (2); ROLLBACK; SHOW TABLES;The answer is: T1, t2 all exist!Mysql> Show tables;+----------------+| Tables_in_test |+----------------+| T1 | | T2 |+----------------+
In centos, MySQL 5.5.37 springmvc's serves directly succeeded in performing the DB operation. why is it not included in the transaction? there is no problem in testing the same local version, the save method for local test execution is to wait until the entire transaction
The difference between OLAP and OLTP and what is Data Warehouse OLAP is often referred to as a data warehouse. But the data warehouse is only part of OLAP, not all. OLTP multi-index than OLAP, and the real-time requirements of high, updated and modified many. OLAP generally seldom modifies and updates data, and so on,
With the development of the network, VoIP services and unified communication platforms become more and more important. The SIP protocol is an exciting focus. Some may ask, what is the SIP protocol? What's better about it? Here we will go into more details.
The Chinese meaning of the SIP protocol is the process initiali
We went out to pre-sales with our boss two days ago, mainly to sell our automated testing service. The tool used hp uft. People who have done automation should know that UFT is already one of the best tools in the field of automation testing. The customer is a person with a technical background, so it is not so cool. We have prepared a bunch of slides on the adva
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